So at present, this app supports nearly every common patch type I can think of. The only missing patch types I've found are FireFlower/PAT, GDIFF, and NINJA 2.0 (does anyone use those for anything?). I probably wont add patch creation as I can't picture anyone hexediting games directly on their phone. Lastly, the file size limitation of 4GB should be adequate for most users considering that 4GB is the limit of the FAT32 filesystem which is present on most (all?) devices' media storage.